Rexgear, if we are talking about this panel, it measures 23" x 3 1/2", it appears to be made of platic engraving stock, approx. 1/16 tk. The thickness of the material you use will be limited by the design of the breakers you install. I believe the ones in this panel are AirPax, the cutout dimensions are, I am sure, listed on their web page. With a dimensioned drawing this panel would be readily produced with a cnc rotary engraving machine, the software may even have a font that is real close.
